A new numerical approach to estimate the Sunyaev-Zel'dovich effect

Autores UPV
Año
CONGRESO A new numerical approach to estimate the Sunyaev-Zel'dovich effect

Abstract

Several years ago, we designed a particular ray tracing method, combined with a Hydra parallel code (without baryons) to compute gravitational CMB anisotropies: weak lensing (WL) and Rees-Sciama (RS) effects. Only dark matter is essentially necessary to estimate them. For very small angular scales, we made an exhaustive study leading to a lensing contribution slightly --but significantly-- greater than previous estimates. Afterwards, the same ray tracing procedure was included in a parallel Hydra code with baryons. The resulting code was then tested.